public class Test1 {
public static void main(String[] args) {
	int number = 1;              //声明一整型变量number，为其赋初值1
	char ch = 'a';                //声明一字符型变量ch，为其赋初值'a'
	final double SCORE = 100.0;  //声明一双精度浮点型常量SCORE，其值为100.0
	System.out.println(number+"是整型");             //输出number
	System.out.println(ch+"是字符型");               //输出ch
	System.out.println(SCORE+"是双精度浮点型");    //输出SCORE
}
}